OPT3101-arduino UNO - wrong distances

Hi,
I have trouble with my OPT3101 sensors connected with my arduino uno via a motor shield.
The distance is negative and when an object is coming closer the distance is increasing.
I try some tips that I found in this forum but nothing change.
I really stuck with this problem, somebody can help me ?

sample for TX1 (via basic code from github):

1,1,2584,69,-60324,96004,364,-229
1,1,2584,69,-59432,94154,358,-224
1,1,2584,69,-60278,95622,363,-225
1,1,2584,69,-58852,94292,357,-236
1,1,2584,69,-60468,95918,364,-225
1,1,2584,69,-59734,94272,358,-219
1,1,2584,69,-60562,96018,365,-224
EEPROM contents as a C string:

"\xB4\xF0\xB2\xF1\xB4\x96\x08\x1A\xB4\xB4\x00\x00\x0B\x09\x00\x10\x0C\x00\x00\xBF\x29\xE4\x93\x2F\x2A\x20\x49\x7C\x2B\x78\x69\x00\x2C\xA7\x0B\x00\x2D\xBB\xE4\x5E\x2E\xA0\x01\x84\x2F\x47\xF7\x4C\x30\xA0\x10\x20\x31\x25\x09\x5F\x32\x0D\x6A\xB0\x33\x4A\xEF\x4B\x34\x2E\xFD\x60\x35\x49\xC3\x00\x36\x60\xD2\x00\x37\x4F\xE3\x00\x38\xB8\xFA\x29\x39\x01\x8F\xF1\x3A\x24\xB3\x4D\x3F\xC8\x08\x00\x41\x10\x80\x8C\x42\x6E\x3C\x00\x43\x83\x00\x00\x45\xDD\x85\x8C\x47\xC8\x08\x80\x48\xC8\x08\x00\x49\xC8\x08\x00\x51\xFF\x33\x00\x52\xCE\x3D\x00\x53\xAA\x34\x00\x54\x3E\x3E\x00\x55\x8F\x35\x00\x5E\x00\x63\x13\x5F\xF8\x16\xBB\x60\x1D\xEA\xD8\x61\xDF\x88\x00\x72\x50\x00\x00\x85\x7A\x26\x00\x86\x82\x26\x00\xB4\xD3\xE4\xE8\xB5\x01\x00\x00\xB8\x1A\x6C\x01\xB9\xA6\x00\x00\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF";

Serial number: 96-08-1A-B4

Hi, you can check Mr. Patrick’s answers here if you already have not:

Hi, yes I try but still the same problem.

Hello.

Your amplitude measurements are on the low-side where we expect measurements to become unreliable.

Has your sensor ever behaved as you expected? What are you using for a target? Some more pictures of your setup might be helpful.

- Patrick